set_device_power

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, the description carries the full burden of behavioral disclosure. It accurately states the key effect (turning off pauses all scheduled watering until turned back on), which is the primary behavioral trait. However, it does not mention details like whether turning on resumes previous schedule settings, device scoping, or response format, but for a simple boolean toggle these are minor gaps.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is two sentences, front-loaded with the action, and contains no redundant phrases. It efficiently conveys the core function and the effect of turning off, with zero wasted words.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a simple boolean toggle tool, the description covers the main behavior but omits the meaning of the device parameter (e.g., whether it applies to all devices when null). It also does not describe return values or errors, though no output schema exists. Given the simplicity and the partial parameter explanation, it is adequate but not fully complete.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, so the description must compensate. It explains the 'on' parameter's meaning by mapping on to 'standby off' and off to 'standby on', which is helpful. However, the optional 'device' parameter is completely unexplained, leaving its purpose and behavior ambiguous. The description adds value for one parameter but fails to cover the other.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the action: turning a controller's automatic schedules on or off, with the mapping between on/off and standby states explicitly given. It also explains the effect of turning off (pausing scheduled watering), which differentiates it from sibling tools like start_zone or run_schedule that control specific watering actions.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description implies when to use the tool (to enable/disable automatic scheduling), but it does not explicitly state when to prefer this over alternatives like stop_watering (which stops current watering) or set_rain_delay. No exclusions or alternative tool names are mentioned, so guidance is implied rather than explicit.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.